
package com.example.demo.sys.mapper;

import com.example.demo.sys.entity.Classdiscuss;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.apache.ibatis.annotations.Select;

import java.util.List;

/**
 * <p>
 *  Mapper 接口 chrimer
 * </p>
 *
 * @author chrimer
 * @since 2020-06-27
 */
public interface ClassdiscussMapper extends BaseMapper<Classdiscuss> {
    @Select("Select * from classdiscuss WHERE courseId=#{courseId}")
    List<Classdiscuss> SelectNum(String courseId);
}
